In the bowl of your stand mixer, add your gelatin and 1/2 cup of water. Stir together and let sit while you heat your sugar mixture
Meanwhile, make your pumpkin pie spice by combining all spices (cinnamon, nutmeg,ginger, allspice) together in a small bowl and setting aside
In a medium bowl, combine your cornstarch, powdered sugar, and 1 tablespoon of pumpkinpie spice – stir to combine (this will be the coating for the outside of your marshmallows)
In a small saucepan, combine the white granulated sugar, corn syrup, salt, and the remaining1/2 cup of water – do not stir it
Turn the stove on to medium high – high heat and let this mixture come to a boil
Keep track of the temperature using a candy thermometer. When it reaches 240 degrees,remove it from the heat and, with your stand mixer on low, slowly pour the hot syrup into thegelatin/water mixture
Continue pouring it in slowly until the entirety of the syrup is in the stand mixer with thegelatin
At this point, turn your stand mixer up to high speed (I didn’t go all the way to the max level,but close) and beat for 12 minutes
Spray oil all over the inside of a 9×13 baking dish. When the entire inside of the dish hasbeen coated, add several tablespoons of your powdered sugar/cornstarch mixture into thepan with a sifter and move around so that the bottom and the sides of the dish are coated inpowder (this way, the marshmallows won’t stick
When your marshmallow fluff has been beating for 11 minutes, and there is only 1minute left, add your vanilla extract and 2 teaspoons of pumpkin pie seasoning
When the marshmallow fluff is done beating, transfer it to your baking dish and use aspatula to smooth the top
Using a sifter or a sieve, cover the top of the marshmallows with a light coating of yourpowdered sugar/cornstarch mix
Let the marshmallows sit out on your counter for AT LEAST four hours or overnight
When they are all done, sprinkle some powdered sugar mix across your counter tocreate a non-stick surface
Run a knife along all edges of the 9×13 baking dish to release the marshmallows. Easethe block out of the baking dish and let it sit on your powdered counter
Using a pizza slicer (or, if you don’t have one, just use a knife), slice your marshmallowsinto squares (size is totally up to you)
In the medium bowl that you mixed your powdered sugar/cornstarch/pumpkin pie spicemix in earlier, add your marshmallows cubes a few at a time, completely coating them in thismixture. This not only makes them not sticky, but it also makes them taste even better!
Once all your marshmallows have been coated in the powder, they can be stored in aTupperware or ziplock bag for a few weeks
*Keep any extra powdered sugar mix around, because as the marshmallows sit for several days, they will absorb the outer coating of powder and will need to be tossed in more